Sun in photo with Sigma 10-20mm f3.5 (Nikon Mount) produces strange rainbow effect and ghosting?

Started Jul 9, 2013 | Questions thread
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HowardChernin Regular Member • Posts: 184
Sun in photo with Sigma 10-20mm f3.5 (Nikon Mount) produces strange rainbow effect and ghosting?

Just bought this lens off eBay, 3 months old, USA warranty (not grey market). Wondering if someone with decent experience with this lens or lenses in general could take a look and tell me if the ghosting and rainbow effects etc. look within spec in these two photos. Thanks!

Notice the ghosts in the sky, and what's that rainbow stuff in the tree on the right side?

Look to the sky, it's a bird, it's a plane, it's... normal?

 HowardChernin's gear list:HowardChernin's gear list
Nikon D3100 Nikon AF-S DX Nikkor 55-200mm f/4-5.6G VR Nikon AF-S DX Nikkor 18-55mm f/3.5-5.6G VR Sigma 10-20mm F3.5 EX DC HSM Nikon AF-S Nikkor 50mm f/1.8G +4 more
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